I have a few questions about a few sheets of $2 notes I recently acquired. First off the serial numbers for 2 sheets start with BBU and the other with EGT. Do either of these make a difference in the value?

The next thing is the fact that the 2 sheets that start with BBU are sequential to each other, meaning the top left note in the first sheet is 1 number off the number in the top left note in the second sheet. Does selling them as a pair make them more valuable because of this?